163345285 has 4 divisors (see below), whose sum is σ = 196014348. Its totient is φ = 130676224.

The previous prime is 163345283. The next prime is 163345319. The reversal of 163345285 is 582543361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 582543361 = 12379 ⋅47059.

It can be written as a sum of positive squares in 2 ways, for example, as 115928289 + 47416996 = 10767^2 + 6886^2 .

It is a cyclic number.

It is not a de Polignac number, because 163345285 - 2¹ = 163345283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163345283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16334524 + ... + 16334533.

It is an arithmetic number, because the mean of its divisors is an integer number (49003587).

Almost surely, 2^163345285 is an apocalyptic number.

It is an amenable number.

163345285 is a deficient number, since it is larger than the sum of its proper divisors (32669063).

163345285 is an equidigital number, since it uses as much as digits as its factorization.

163345285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32669062.

The product of its digits is 86400, while the sum is 37.

The square root of 163345285 is about 12780.6605854314. The cubic root of 163345285 is about 546.6409984891.

The spelling of 163345285 in words is "one hundred sixty-three million, three hundred forty-five thousand, two hundred eighty-five".